Difference between VAT and Property Class?

A.    Named visual attributes define only font, color, and pattern attributes; property classes can contain these and any other properties.

B.    You can change the appearance of objects at runtime by changing the named visual attribute programmatically; property class assignment cannot be changed programmatically.

C.    When an object is inheriting from both a property class and a named visual attribute, the named visual attribute settings take precedence, and any visual attribute properties in the class are ignored.